Update Thunderbird Portable's version from 31.7.0 to 38.3.0 and lost all saved passwords

Hello,

I've updated Thunderbird Portable from 31.7.0 to 38.3.0 and lost all saved passwords. Luckily when I turn back to version 31.7.0 with my profile folder I still have all the passwords remembered. But now I can't use the latest version of TB because I have too many accounts so it would be extremely frustrating if I have to enter all the passwords into the latest TB's version.

Any suggestion how to use the latest version without enter all the passwords again ? I am using Windows 10 Pro.

Thanks